Heavy rains cause the Xepian-Xe Nam Noy hydropower dam in southern Laos to collapse, releasing a reported five billion cubic metres of water. As a result, 20 people are confirmed dead, over a hundred are missing, and 6,600 have been displaced. (BBC)(The Guardian)
Police identify the gunman in a deadly mass shooting in Toronto, Canada. Investigators are still determining a motive. His family claims he had severe mental health problems. (CBC)
Femen co-founder and activist Oksana Shachko is found dead in her Paris apartment in an apparent suicide. France granted her political refugee status in 2013. (RFE/RL)